Točno: ph value is a unit of measurement., Buffers tell if water is acidic, neutral or alkaline., Alkaline water causes skin irritation., Netočno: PH tells about the amount of water we should drink., ph meter measures pollution., Acidic water is safe to drink.,

Water

打印
嵌入

排行榜

视觉风格

选项

切换模板

恢复自动保存：？